PeCOD® ANALYZER 15-MINUTE CHEMICAL OXYGEN DEMAND

(COD) ANALYSISTHE WATER QUALITY MONITORING SYSTEM THAT IS MERCURY AND DICHROMATE FREE

The revolutionary PeCOD® Analyzer technology provides Chemical Oxygen Demand results in under 15 minutes in a Simple-Safe-Effective manner.

With our mercury and dichromate free chemistry installed in over 20 countries, the PeCOD® Analyzer has delivered successful test monitoring of COD in a variety of environments with our approved and published MOECC method (E3515).

Through our proprietary testing methods our customers are saving millions of dollars utilizing both process and efficiency improvements in their facilities.

The PeCOD® technology is supporting the health and safety of their operators while also protecting the environment.

PeCOD® ANALYZER BENEFITS

Laboratory, portable and online configurations

use identical technology and method

Eliminates the use of hazardous chemicals

such as Mercury and Dichromate

15 minute test enables faster

treatment decisions

Proven strong correlation

to BOD5 test

The PeCOD® Analyzer offers a unique nanotechnology-based approach to Chemical Oxygen Demand (COD) analysis which overcomes many of the problems encountered by traditional methods.

The PeCOD® Analyzer offers a safe, green chemistry method that can be used by anyone. This eliminates the need for trained analytical chemists on staff or an external lab facility.

MANTECH’s portable, online and laboratory PeCOD® Analyzers test thousands of samples every day for a wide variety of applications, including:

• Pulp and paper mills• Food and beverage

producers• University and

college laboratories• Industrial and

municipal wastewater treatment

PeCOD® ANALYZER SENSOR

Figure 1: peCOD NanotechnologyRoughly 2 times the oxidizing power vs. dichromate

i.e. Benzene, 1.8 by CODCr and 2.6 by peCOD

TO EXTERNAL CIRCUIT AND AUXILIARY

ELECTRODE Photocurrent

Conducting substrate (Eapp = 0.2V vs Ag/AgCl)

Immobilized TiO2

nano-particle

Oxidation of organics

hv (λ < 400 nm)

e-

PeCOD® ANALYZER BENEFITSMANTECH’s PeCOD® Analyzer can be configured to accommodate laboratory operations, automated sampling or continuous process monitoring.

LABORATORY MODELS • Benchtop L50 has a small footprint

(280 x 210 mm, 11.00 x 8.25 in) and is lightweight (7 kg, 15 lb)

• Bottle-top Dispenser provided for fast, simple sample preparation

• Can be upgraded to Automated or Online systems

ONLINE MODELS• The only online COD analyzer on the market which offers a direct measure of COD• Save time and money through process optimization with real time COD results• Additional parameters can be added on, including pH, conductivity, alkalinity,

and ammonia

* Delivered model may not be exactly as shown.

+1 (519) 763-4245

INFO@MANTECH-INC.COM

5473 HIGHWAY 6 NORTH

GUELPH, ONTARIO, CANADA

N1H 6J2

MANTECH PeCOD® PRO

MANTECH’s PeCOD® Pro software adds automation and a sleek user interface to the Benchtop L50 PeCOD® Analyzer.

*Only offered with Manual L50.

Requires laptop.

Easy to use interface1

2Unit is ready to analyze samples when the work day begins. Automated calibration and control check can be scheduled ahead of time.

3 Customized sample names and batches

Operates two Benchtop L50 units from a single computer4

BENEFITS

@mantech_inc linkedin.com/company/mantech-inc-

© 2017 MANTECH. All rights reserved.

PeCOD® is a registered trademark of

Aqua Diagnostic Pty Australia.

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PeCOD® Case Study #09 Municipal Wastewater Treatment

General Project Information

Client Municipal WWTP

Location

GTA Ontario Canada

About the Client The plant serves 1.2 million people of the GTA with a daily capacity of 163,500 m3 of wastewater. The WWTP uses three trunk sewers for conventional and biosolids treatment. Final effluent BOD ranges between 2- 30 mg/L.

Introduction

A municipal Wastewater Treatment Plant (WWTP) located in the Greater Toronto Area (GTA) currently utilizes Biological Oxygen Demand (BOD) from a 24-hour composite sample to monitor their discharge to Lake Ontario and meet compliance standards. The Challenge

The BOD method run on the 24-hour composite from the final effluent of the WWTP is a 5-day BOD test. The samples are sent out to an external lab for analysis, which creates a 7 day turn around for results. This does not provide sufficient time to respond to high organic loads being discharged to Lake Ontario. The delay in response to sample results is also reflected in the sampling frequency, since a 24-hour composite sample does not provide insight as to when the activity in the WWTP may have occurred.

The Solution

MANTECH partnered with the WWTP to install a Real Time L100 PeCOD® at the final effluent to monitor Chemical Oxygen Demand (COD) on an hourly basis. The PeCOD® is proven to be an excellent BOD screening tool, providing accurate BOD estimates in just minutes. The PeCOD® and BOD correlation is stronger than similar dichromate COD approaches due to the fact that PeCOD® does not require pre-digestion of the sample.

2

Author: Stephanie Horner B.Eng., Quality Control and Research EIT at MANTECH

Positive Monitoring Applications

The PeCOD® can provide real-time regulatory screening for compliance and optimization of wastewater treatment processes. The green chemistry PeCOD® COD system can be integrated anywhere along the wastewater treatment process for fast analysis, ease of use, safe operation, and accurate results to aid in financial and environmental sustainability.

The Result

The PeCOD® analyzed the same effluent that was collected in the 24-hour BOD sample and was able to capture several events in real time. The below figure displays hourly COD from the PeCOD® on the left axis and daily composite BOD on the right in mg/L. The data was collected from June to August 2016 with BOD values plotted when the sample was collected.

The PeCOD® was successfully able to measure known events in real time that were occurring at the WWTP. One event was observed on July 25th 2016 when an aeration and final tank were taken offline for preventative maintenance creating a large load of organics. The PeCOD® immediately spiked above 150 mg/L on July 25th whereas the BOD result of 20 mg/L was not known until the beginning of August.

1

Clean Harbors is an industrial wastewater treatment facility in

Guelph, Ontario. The facility utilizes highly refined, chemical precipitation processes, which remove heavy metals, suspended solids, and organics to generate safe effluent for discharge into municipal sewer systems. Wastewater is treated to meet municipal discharge requirements for biochemical oxygen demand (BOD5). Since BOD is a 5-day test, the results cannot be used to continuously monitor organic load. Chemical oxygen demand (COD) is used as a fast assessment of organic contamination. A correlation study is then used to determine the relationship between COD and BOD5.

The PeCOD® COD method is well suited for use in an

industrial wastewater treatment facility due to its rapid analysis and safe operation. COD monitoring offers the operational feedback necessary for optimizing production, thereby reducing the consumption of raw materials, energy, and sewer discharge costs.

PeCOD® Case Study #02 Industrial Wastewater

Figure 1: A scatterplot demonstrating a strong correlation between PeCOD® COD and CODCr for incoming hauled wastewater from a variety of industries.

2

Results in Figure 1 are from a single Clean Harbors treatment plant, servicing multiple different

industries, including automotive, manufacturing, primary steel, chemical, and dairy facilities. Samples were prepared by centrifugation to settle solids then mixed in a 1:49 ratio with RED range PeCOD® electrolyte. The soluble COD was analyzed by the PeCOD® COD method and compared against the dichromate COD (CODCr) and BOD5 methods.

The objective of this study was to determine if a correlation exists between PeCOD® COD and traditional methods (e.g. CODCr and BOD5). The results indicated a strong correlation between PeCOD® COD and CODCr for incoming hauled wastewater (Figure 1). Similarly, the results from treated wastewater samples taken from various industries, demonstrated a strong correlation between PeCOD® COD and BOD5 methods (Figure 2).

Upon completion of the study, Clean Harbors invested in the PeCOD® COD Analyzer, complete with autosampler, immediately putting it into production and replacing the CODCr method. The key advantage for Clean Harbors in adopting the PeCOD® COD Technology, was the speed of the test. The wastewater treatment facility can obtain critical information on incoming loads within 15 minutes, allowing for quick decision making and more efficient treatment. Prior to unloading, a COD measurement is obtained using the PeCOD®. If the result is above the acceptable limit, the truck can immediately be diverted to an incinerating plant. However, due to the nature of the CODCr method, results are not available for approximately 3 hours. In that time, the truck would have unloaded the wastewater and left the facility. Avoiding this time delay, eliminates the requirement for subsequent storage and hauling costs. Furthermore, incoming wastewater that is below plant sewer discharge limits can be quickly discharged, thereby saving on chemical and energy costs. The PeCOD® also provides a reliable estimate of BOD, which is required for compliance with municipal standards. Historically, the BOD results were received by Clean Harbors 8 days after sampling. Now the facility can obtain a daily real-

Figure 2: A scatterplot demonstrating a strong correlation between PeCOD® COD and BOD5 for composite daily sampling of treated wastewater effluent discharged to the sewer

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time BOD estimate, ensuring peace of mind with regards to their treated discharge effluent. By investing in a PeCOD®, Clean Harbors continuously monitors the organic load of influent and effluent

wastewater, to optimize treatment processes. The speed and accuracy of the PeCOD® COD method has led to substantial financial savings, thereby increasing profitability. In addition, Clean Harbors improved the health and safety of the workplace and their employees by eliminating the use of dichromate, mercury, and concentrated acid required with the CODCr test. With the PeCOD® investment, Clean Harbors demonstrated financial, sustainable, and environmental stewardship, which benefits the community as a whole. Author: Nicole Visaggio, B.Sc., Quality Control and Research Chemist at MANTECH

peCOD ANALYZEROXYGEN DEMAND ANALYSIS FOR

SOURCE & TREATED DRINKING WATERS

The revolutionary peCOD Analyzer technology measures the chemical reactivity and associated oxidative changes in Natural Organic Matter (NOM). As a result it is more sensitive than TOC and UV254 to changing NOM concentrations. The peCOD method follows ASTM International method D8084, and is included in Health Canada’s Natural Organic Matter in Drinking Water (2018) guideline.

NOM is a critical target for drinking water treatment.

It can be associated with:

• Taste, odour, colour issues• Coagulant, oxidant demand• Disinfection by products (DBP) precursors

NOM compounds are known to react with common disinfectants to produce harmful and potentially carcinogenic DBPs.

Traditional NOM surrogates (UV254, SUVA, TOC, DOC) may not be suitable for assessing NOM removal in all cases, as they are often calibrated or “tuned” to the specific site matrix. peCOD is independent of the matrix, therefore variations in NOM are clear and can be acted upon.

Pictured: L100 peCOD Analyzer with MT-30 Autosampler

10

8

6

4

2

0

8-Aug 15-Aug 29-Aug22-Aug 5-Sep 19-Sep12-Sep 26-Sep

Date

mg/

L

peCOD Total Organic Carbon

EVENT DETECTION AT A TEXAS WTP

peCOD DETECTED CHANGES IN TREATMENT EFFICIENCY

THAT TOC DID NOT. THE peCOD RESULTS ALLOWED

THE OPERATORS TO MAKE DECISIONS WHICH LED TO

FINANCIAL SAVINGS AND PROTECTION OF PUBLIC HEALTH.

peCOD ANALYZER BENEFITS• Identify organic reactive changes that occur during

treatment• Can be combined with alkalinity to fully comply with

US EPA guidelines (EPA 815-R-99-012, Section 2.3, Table 2-1)

• Measures oxidisability; replaces permanganate method in EU directive 98/83/EC

• Optimize coagulation and DBP formation potential• Laboratory, portable and online configurations use

identical technology and method• Low detection limit (< 1 mg/L) with results generated

in less than 5 minutes

MANTECH’s portable, online and laboratory peCOD Analyzers test thousands of samples every day for a wide variety of applications, including:

SOURCE

WATER

WATER

REUSE

MUNICIPAL DRINKING

WATER TREATMENT

UNIVERSITY

AND COLLEGE

LABORATORIES

"TOC ON ITS OWN

SHEDS NO LIGHT ON

THE OXIDIZABILITY OF

THE MEASURED CARBON

OR THE AMOUNT OF

OXYGEN NEEDED FOR

ITS BIODEGRADATION."

- TOC MANUFACTURER

Pictured: Online L100 peCOD Analyzer

“MY peCOD IS MEASURING NOM CHANGES IN OUR SOURCE WATER

WHICH ARE NOT PICKED UP BY OUR TOC OR UV254.”

- UTILITY IN THE ROCKY MOUNTAINS

CHEMISTRY OF peCOD AND TOC

HONH2

OH

O

+ O2 CO2 + H2O + HN3

TOC measures conversion to CO2

peCOD measures oxygen demand which is related to NOM reactivity

+1 (519) 763-4245

INFO@MANTECH-INC.COM

5473 HIGHWAY 6 NORTH

GUELPH, ONTARIO, CANADA

N1H 6J2

MANTECH PeCOD PRO™

MANTECH’s PeCOD Pro™ software adds automation and a sleek user interface to the Benchtop L100 peCOD Analyzer.

*Only offered with Benchtop L100.

Requires laptop.

Easy to use interface1

2Unit is ready to analyze samples when the work day begins. Automated calibration and control check can be scheduled ahead of time.

3 Customized sample names and batches

Operates two Benchtop L100 units from a single computer4

BENEFITS

© 2018 MANTECH. All rights reserved.@mantech_inc linkedin.com/company/mantech-inc-